Fontaine Heavy Haul has 53-foot Xcalibur extendable trailers that are California legal. The four models offer a choice of spring or air suspension with tandem or tridem axles. The Xcalibur extendable trailers are 53 feet in the closed position and 90 feet fully opened.
When the Fontaine trailers are closed and the sliding axles are in their most forward position, the distance between the kingpin and the rear axle center is less than 40 feet, making them legal to operate in the state of California.
A cable management system helps protect telescoping air and electrical lines from damage. Sliding axles are attached to the trailer in a “Slider Box” so they move together as a unit. Steel I-Beam crossmembers are welded on 12-inch centers.